We have developed a new molecular beacon design that requires an additional UV pulse for fluorescence activation. This improves the signal-to-noise ratio tremendously compared to previous approaches and allows for a precise control of the time point and location of RNA labelling.

A random beacon periodically outputs a random number and was introduced by Rabin[12] to secure remote transaction. We consider a random beacon that is pervasive in the sense that, it is available everywhere, and accesses to the beacon blends with normal activities. With a pervasive beacon, it is difficult to disrupt the beacon and detect accesses to it. As a result, the pervasiveness of the bea...

A smart helmet-based wearable personnel proximity warning system was developed to prevent collisions between equipment and pedestrians in mines. The helmet worn by receives signals transmitted Bluetooth beacons attached heavy equipment, light vehicles, or dangerous zones, provides visual LED warnings the operators simultaneously. performance test of proposed conducted an underground limestone m...

LR-WPANs have two types of networks: beacon–enabled and non-beacon-enabled networks. In beacon-enabled LR-WPANs, the high reliability of Beacon frame transmission is required because all transmissions is controlled by the in-formation in the Beacon frame. However, the process to handle the case for the beaconloss is not well-defined in the standard. In this paper, an enhanced protocol for the c...

We report the sensitive detection of telomerase activity by using exonuclease III-aided target recycling to amplify the signal produced by a chimeric LNA-DNA molecular beacon. We demonstrate the specific detection of as few as 30 telomerase-positive breast cancer cells in a single-measurement fluorescence assay that avoids the problematic PCR and gel analysis of the current "gold-standard" assay.

In a paper by Biro et al. [2], a novel twist on guarding in art galleries, motivated by geographical greedy routing in sensor networks, is introduced. A beacon is a point that when activated induces a force of attraction, or repulsion that can move points within the environment. The effect of a beacon is similar to standard visibility with some additional properties. The effects of a beacon are...

Beacon placement strongly affects the quality of spatial localization, a critical service for context-aware applications in wireless sensor networks; yet this aspect of localization has received little attention. Fixed beacon placement approaches such as uniform and very dense placement are not always viable and will be inadequate in very noisy environments in which sensor networks may be expec...

The IEEE 802.11 standard requires that a beacon station has to stay in awake after generating a beacon frame to serve probe request. This requirement make a reason to consume valuable power of beacon station even though there are no frame exchanges between stations or there exists only one station in the ad hoc network. This paper proposes an ePSM(Enhanced Power Save Mode) to reduce effectively...

Wireless body area networks are widely used for applications such as health care system, where wireless sensors (nodes) monitor the parameter(s) of interest. Sensors play a critical role in many sensor network applications. Mac layer operates on non-beacon and beacon enabled mode. The IEEE 802. 15. 4 standard provide two modes of connections: beacon enabled mode and non-offer transmission deter...